Abstract
STUDIES ON IMPACT OF HEAVY METAL CHROMIUM ON CATLA CATLA WITH REFERENCE TO BIOCHEMICAL PARAMETERS

Tanima Debnath Sarkar* and P. Senthil Elango

ABSTRACT

Qualitative and quantitative assessment of heavy metals in the Thermal Power Plant effluent was performed to study the impact of their toxic effects on various biomarkers (carbohydrate, protein and lipid profiles). Heavy metals present in the water were in the order Fe > Cu > Zn > Mn > Ni > Co > Cr. Fe and Ni exceeded and Cr was equal to the USA standards set by UNEPGEMS. Glycogen in liver (p < 0.001) and muscle (p < 0.01) depleted significantly. Insignificant (p < 0.05) decline in blood glucose (−21.0%) and significant (p < 0.05) elevation in both total protein and globulin in serum, liver and muscle was noted. Albumin decreased significantly (p < 0.01) in serum but showed significant (p < 0.05) increase in liver and muscle. Thus A:G ratio fell in serum and rose in liver and muscle. Similarly lipid profile also gets altered where significant elevation in serum total lipid (p < 0.01), total cholesterol (p < 0.01), phospholipid (p < 0.05), triglycerides (p < 0.001), LDL (p < 0.01) was observed but significant (p < 0.05) decline in VLDL was recorded. These biomarkers suggested that fish become hypoglycemic, hyperlipidemic and hypercholesterolemic. Heavy metals also provoked immune response as evident from the rise in globulin. In conclusion the Thermal Power Plant wastewater containing heavy metals induced stress, making fish weak and vulnerable to diseases.[1] Chromium and its derivatives such as sulphates, oxides, chlorides, nanoparticles etc have been found to have deleterious effect on neurology, ionoregulatory, physiology, biochemistry, metabolism and histological parameter in Catla catla fish.[2]

Keywords: Glucose, glycogen, protein, lipid profile, ionoregulatory, nanoparticle.


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